Home / 13,879.20-19,153.74-7,591.57

Finding the Fourth Proportional to 13,879.20, 19,153.74 and 7,591.57

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Solution

The fourth proportional to 13,879.20, 19,153.74 and 7,591.57 is: 10,476.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.20 : 19,153.74 = 7,591.57 : x
  2. Step 2: Convert to fraction form
    13,879.20/19,153.74 = 7,591.57/x
  3. Step 3: Cross multiply
    13,879.20x = 19,153.74 × 7,591.57
  4. Step 4: Simplify right side
    13,879.20x = 145,406,881.18
  5. Step 5: Solve for x
    x = 145,406,881.18/13,879.20
  6. Step 6: Final answer
    x = 10,476.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.